[1]张舶航,史冠宇,张蕾.不同地震加速度影响下边坡安全性数值模拟[J].江苏水利,2024,(08):12-16.
 ZHANG Bohang,SHI Guanyu,ZHANG Lei.Numerical simulation of slope safety under different seismic accelerations[J].JIANGSU WATER RESOURCES,2024,(08):12-16.
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不同地震加速度影响下边坡安全性数值模拟()
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《江苏水利》[ISSN:1006-6977/CN:61-1281/TN]

卷:
期数:
2024年08期
页码:
12-16
栏目:
水利规划与设计
出版日期:
2024-08-15

文章信息/Info

Title:
Numerical simulation of slope safety under different seismic accelerations
文章编号:
1007-7839(2024)08-0012-0005
作者:
张舶航史冠宇张蕾
(江苏省工程勘测研究院有限责任公司,江苏 扬州 225001)
Author(s):
ZHANG Bohang SHI Guanyu ZHANG Lei
(Jiangsu Province Engineering Investigation and Research Institute Co., Ltd., Yangzhou 225001, China)
关键词:
峰值地震加速度边坡稳定性变形稳定数值模拟
Keywords:
peak seismic acceleration slope stability stable deformation numerical simulation
分类号:
TV222
文献标志码:
A
摘要:
为了掌握不同峰值地震加速度作用下黄土边坡的稳定性响应机理,以某典型斜坡为对象,采用geo-studio软件研究了该边坡在不同峰值加速度波形作用下的稳定性,得出以下结论:边坡稳定性受地震影响显著,当地震加速度从0.05 g增长至0.4 g,滑移面处的变形从1.52 m上升至12.19 m,安全系数从1.082下降至0.964;动荷载的增加使得边坡内部剪应力增大,裂缝不断扩张,同时受地下水位的影响,孔隙水压力不断增长,最终边坡稳定性逐渐下降,滑移风险不断提高。
Abstract:
In order to understand the stability response mechanism of loess slopes under different peak seismic accelerations, this paper takes a typical slope as the object and uses geo-studio software to study the stability of the slope under different peak acceleration waveforms. The following conclusions are drawn: slope stability is significantly affected by earthquakes. When the seismic acceleration increases from 0.05 g to 0.4 g, the deformation at the sliding surface increases from 1.52 meters to 12.19 meters, and the safety factor decreases from 1.082 to 0.964; The increase in dynamic load leads to an increase in shear stress inside the slope, continuous expansion of cracks, and an increase in pore water pressure due to the influence of groundwater level. Ultimately, the stability of the slope gradually decreases and the risk of sliding increases.

参考文献/References:

[1]祁生文,伍法权,刘春玲,等. 地震边坡稳定性的工程地质分析[J]. 岩石力学与工程学报,2004(16):2792-2797.
[2]李巍. 基于有限元法的岩质边坡地震稳定性数值分析[J]. 土工基础,2021,35(1):30-33.
[3]黄星. 水平和竖向地震作用对边坡稳定性影响的有限元研究[J]. 土工基础,2020,34(1):69-72.
[4]杨楠,邓亚虹,慕焕东,等. 一种基于拟动力法和剩余推力法的地震边坡稳定性分析新方法[J]. 工程地质学报,2023,31(2):607-616.
[5]宋健,陆朱汐,谢华威,等. 基于极限平衡原理的地震边坡浅层和深层耦合滑移分析[J]. 岩土工程学报,2023,45(6):1141-1150.
[6]刘汉龙,费康,高玉峰. 边坡地震稳定性时程分析方法[J]. 岩土力学,2003(4):553-556,560.
[7]中华人民共和国住房和城乡建设部. 建筑抗震设计规范:GB 50011—2010[S].北京:中国建筑工业出版社,2010.

备注/Memo

备注/Memo:
收稿日期:2024-05-22
作者简介:张舶航(1991—),男,工程师,硕士,主要从事地质勘察等工作。E-mail:bugaiqi877@163.com
更新日期/Last Update: 2024-08-15